Frequency and/or phase compensated microelectromechanical oscillator
First Claim
1. A compensated microelectromechanical oscillator, comprising:
- a microelectromechanical oscillator to generate an output signal wherein the output signal includes a first frequency, the microelectromechanical oscillator comprises;
a microelectromechanical resonator; and
drive circuitry, coupled to microelectromechanical resonator, to output a drive signal to the microelectromechanical resonator;
control circuitry, coupled to the drive circuitry, to output a control signal which adjusts the drive signal from the drive circuitry; and
frequency adjustment circuitry, coupled to the microelectromechanical oscillator to generate an output signal having a second frequency using the output signal of the microelectromechanical oscillator and a set of values, wherein the second frequency is greater than the first frequency.
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Abstract
There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a compensated microelectromechanical oscillator, having a microelectromechanical resonator that generates an output signal and frequency adjustment circuitry, coupled to the microelectromechanical resonator to receive the output signal of the microelectromechanical resonator and, in response to a set of values, to generate an output signal having second frequency. In one embodiment, the values may be determined using the frequency of the output signal of the microelectromechanical resonator, which depends on the operating temperature of the microelectromechanical resonator and/or manufacturing variations of the microelectromechanical resonator. In one embodiment, the frequency adjustment circuitry may include frequency multiplier circuitry, for example, PLLs, DLLs, digital/frequency synthesizers and/or FLLs, as well as any combinations and permutations thereof. The frequency adjustment circuitry, in addition or in lieu thereof, may include frequency divider circuitry, for example, DLLs, digital/frequency synthesizers (for example, DDS) and/or FLLs, as well as any combinations and permutations thereof.
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Citations
42 Claims
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1. A compensated microelectromechanical oscillator, comprising:
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a microelectromechanical oscillator to generate an output signal wherein the output signal includes a first frequency, the microelectromechanical oscillator comprises; a microelectromechanical resonator; and drive circuitry, coupled to microelectromechanical resonator, to output a drive signal to the microelectromechanical resonator; control circuitry, coupled to the drive circuitry, to output a control signal which adjusts the drive signal from the drive circuitry; and frequency adjustment circuitry, coupled to the microelectromechanical oscillator to generate an output signal having a second frequency using the output signal of the microelectromechanical oscillator and a set of values, wherein the second frequency is greater than the first frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A compensated microelectromechanical oscillator, comprising:
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a microelectromechanical oscillator to generate an output signal wherein the output signal includes a first frequency, the microelectromechanical oscillator comprises; a microelectromechanical resonator; and drive circuitry, coupled to microelectromechanical resonator, to output a drive signal to the microelectromechanical resonator; control circuitry, coupled to the drive circuitry, to;
(i) determine a control signal using the data which is representative of temperature and (ii) output a control signal which adjusts the drive signal from the drive circuitry;frequency adjustment circuitry, coupled to the microelectromechanical oscillator to generate an output signal having a second frequency using the output signal of the microelectromechanical oscillator and a set of values, wherein the second frequency is greater than the first frequency; and memory, coupled to the frequency adjustment circuitry, to store the set of values. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A compensated microelectromechanical oscillator, comprising:
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a microelectromechanical oscillator to generate an output signal wherein the output signal includes a first frequency, the microelectromechanical oscillator comprises; a microelectromechanical resonator; and drive circuitry, coupled to microelectromechanical resonator, to output a drive signal to the microelectromechanical resonator; control circuitry, coupled to the drive circuitry, to output a control signal to the drive circuitry wherein the control signal adjusts the drive signal from the drive circuitry; and frequency adjustment circuitry, coupled to the microelectromechanical oscillator to generate a plurality of output signals using (i) one or more sets of values and (ii) the output signal of the microelectromechanical oscillator wherein at least one of the output signals includes a frequency that is greater than the first frequency. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A compensated microelectromechanical oscillator, comprising:
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a microelectromechanical oscillator to generate an output signal wherein the output signal includes a first frequency, the microelectromechanical oscillator comprises; a microelectromechanical resonator; and drive circuitry, coupled to microelectromechanical resonator, to output a drive signal to the microelectromechanical resonator; temperature sensor circuitry, coupled to the control circuitry, to provide data which is representative of an operating temperature to the control circuitry; control circuitry, coupled to the drive circuitry and temperature sensor circuitry, to;
(i) determine a control signal using the data which is representative of an operating temperature and (ii) output a control signal which adjusts the drive signal from the drive circuitry; andfrequency adjustment circuitry, coupled to the microelectromechanical oscillator to generate a plurality of output signals using (i) one or more sets of values and (ii) the output signal of the microelectromechanical oscillator wherein at least one of the output signals includes a frequency that is greater than the first frequency. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification